Poor Dean Karnazes, the man running across the country on "Live With Regis And Kelly," just joined Fox and MSNBC's Norah O'Donnell in the Osama-Obama mixup ranks.

Karnazes reached D.C. just in time to mark the death of Osama bin Laden -- but accidentaly told Kelly Ripa and Regis Philbin how excited he is to be in the nation's capital "on the day they take Obama out."

You can hear a gasp go through the studio audience.

(Making things more uncomfortable is the fact that Karnazes was just invited to the White House to meet with the fitness-focused Michelle Obama.)

Of course, we're with Ripa on this one: "The man runs 45 miles a day -- [do that and] see how lucid you are."